# NTSB investigations, 2021: Sys/Comp malf/fail (non-power)

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

Page 1 of 2 · 57 cases

## Latest cases

- [NTSB WPR22FA048](https://openairdocs.org/ntsb/WPR22FA048.md): Zenith Zodiac CH601XL · Temecula, CA · Accident · 1 fatal · Class 3 · Field · Final report · Nov 23, 2021 · N601KS · Destroyed
  > The failure of the airplane’s canopy latch system, which resulted in the canopy opening in flight and a loss of airplane control. Contributing to the accident was the lack of a secondary canopy latch as recommended by the kit manufacturer.
- [NTSB WPR22LA040](https://openairdocs.org/ntsb/WPR22LA040.md): Piper PA-28R-200 · Boulder City, NV · Accident · No injuries · Class 3 · Limited · Final report · Nov 14, 2021 · N5057S · Substantial damage
  > The installation of an improper right main landing gear door rod-end bolt, which resulted in the right main landing gear not extending during landing.
- [NTSB ENG22LA004](https://openairdocs.org/ntsb/ENG22LA004.md): Beech F33 · Bellefontaine, OH · Occurrence · No injuries · Class 3 · Limited · Final report · Nov 12, 2021 · N9035Q · Minor damage
  > The internal failure of the autopilot pitch servo actuator that caused the autopilot to command a nose down movement of the pitch trim.
- [NTSB ERA22LA054](https://openairdocs.org/ntsb/ERA22LA054.md): Piper PA28 · Sarasota, FL · Accident · No injuries · Class 3 · Limited · Final report · Nov 9, 2021 · N40831 · Substantial damage
  > A partial loss of engine power due to a failed throttle cable.
- [NTSB ERA22FA047](https://openairdocs.org/ntsb/ERA22FA047.md): Piper PA30 · Rock Hill, SC · Accident · 1 fatal · Class 3 · Field · Final report · Nov 5, 2021 · N8924Y · Substantial damage
  > The pilot’s exceedance of the airplane's critical angle of attack while troubleshooting a landing gear indication, which resulted in an aerodynamic stall at low altitude.
- [NTSB GAA22WA034](https://openairdocs.org/ntsb/GAA22WA034.md): Piper PA34 · Luqa, Malta · Accident · No injuries · Class 5 · Foreign · Nov 1, 2021 · 9H-AEB · Substantial damage
- [NTSB GAA22WA026](https://openairdocs.org/ntsb/GAA22WA026.md): Sikorsky S92 · North Sea, United Kingdom · Incident · Class 5 · Foreign · Oct 31, 2021 · G-VINI · Minor damage
- [NTSB WPR22LA015](https://openairdocs.org/ntsb/WPR22LA015.md): Wsk-Mielec AN-2TD · Wilton, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 14, 2021 · N857PF · Substantial damage
  > The pilot’s inability to control the airplane’s pitch during departure for reasons that could not be determined because of the extensive fragmentation and thermal damage the airplane sustained in the accident sequence.
- [NTSB ERA22LA005](https://openairdocs.org/ntsb/ERA22LA005.md): Cessna 210 · Columbia, SC · Accident · No injuries · Class 4 · Limited · Final report · Oct 5, 2021 · N6318B · Substantial damage
  > A failure of the landing gear hydraulic power pack for reasons that could not be determined.
- [NTSB CEN22LA004](https://openairdocs.org/ntsb/CEN22LA004.md): Cessna 195 · Watkins, CO · Accident · Minor injuries · Class 4 · Limited · Final report · Oct 4, 2021 · N3027B · Substantial damage
  > The separation of the left main landing gear spring during landing roll due to a preexisting fatigue crack.
- [NTSB WPR22LA003](https://openairdocs.org/ntsb/WPR22LA003.md): Interstate S-1A · Independence, OR · Accident · No injuries · Class 4 · Limited · Final report · Oct 2, 2021 · N37317 · Substantial damage
  > The separation of the left rudder pedal interconnect cable during takeoff, which resulted in the student pilot’s inability to maintain directional control.
- [NTSB ERA21LA386](https://openairdocs.org/ntsb/ERA21LA386.md): Hiller UH-12E · Millen, GA · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 29, 2021 · N430NR · Substantial damage
  > The improper reassembly of the tail rotor gearbox following maintenance, which resulted in fatigue failure of the input pinion gear shaft, and the subsequent loss of tail rotor drive.
- [NTSB ERA21LA385](https://openairdocs.org/ntsb/ERA21LA385.md): Doan Vernon D W10-WITTMAN Tailwind · Brooksville, FL · Accident · No injuries · Class 4 · Limited · Final report · Sep 29, 2021 · N68TW · Substantial damage
  > The failure of the nose landing gear retention bolt during taxi which resulted in a loss of control and subsequent impact with the taxiway.
- [NTSB CEN21LA460](https://openairdocs.org/ntsb/CEN21LA460.md): Cessna P210N · El Paso, TX · Accident · No injuries · Class 4 · Limited · Final report · Sep 28, 2021 · N4614K · Substantial damage
  > A faulty landing gear pressure switch prematurely deactivated the landing gear motor during extension, which resulted in the landing gear collapsing during rollout.
- [NTSB ENG21WA045](https://openairdocs.org/ntsb/ENG21WA045.md): Sikorsky S92 · North Sea, Norway · Incident · No injuries · Class 5 · Foreign · Sep 25, 2021 · LN-ONH · Minor damage
- [NTSB ERA21LA358](https://openairdocs.org/ntsb/ERA21LA358.md): Alon A2 · Abingdon, VA · Accident · Minor injuries · Class 4 · Limited · Final report · Sep 13, 2021 · N5644F · Substantial damage
  > The failure of a nosewheel steering actuator arm, which resulted in a loss of control during the landing rollout.
- [NTSB CEN21LA395](https://openairdocs.org/ntsb/CEN21LA395.md): Klapp Peter A Klapp KR-2S · Wadsworth, OH · Accident · 1 fatal · Class 3 · Limited · Final report · Sep 3, 2021 · N729PK · Destroyed
  > A loss of airplane control for a reason that could not be determined based on available information.
- [NTSB WPR21LA337](https://openairdocs.org/ntsb/WPR21LA337.md): Cessna 172E · Enterprise, OR · Accident · No injuries · Class 3 · Limited · Final report · Sep 2, 2021 · N3965S · Substantial damage
  > The fatigue fracture of the nose gear upper torque link, which resulted in the separation of the torque link from the shock strut and a loss of directional control.
- [NTSB CEN21LA389](https://openairdocs.org/ntsb/CEN21LA389.md): Robinson Helicopter R22 Beta · Arnaudville, LA · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 27, 2021 · N827SH · Substantial damage
  > The loss of tail rotor drive due to a fatigue failure of the tail rotor gearbox output shaft, which resulted in a loss of control during landing.
- [NTSB ERA21LA339](https://openairdocs.org/ntsb/ERA21LA339.md): Enstrom 280 · Port Orange, FL · Accident · No injuries · Class 3 · Limited · Final report · Aug 21, 2021 · N9285 · Substantial damage
  > The failure of the tail rotor drive shaft at the coupling due to torsionally applied shear stress.
- [NTSB ERA21LA336](https://openairdocs.org/ntsb/ERA21LA336.md): Gulfstream Aerospace G-IV · Fort Lauderdale, FL · Accident · No injuries · Class 3 · Limited · Final report · Aug 21, 2021 · N277GM · Substantial damage
  > The pilot-in-command’s (PIC) and second-in-command’s (SIC) failure during preflight inspection to ensure that the nose landing gear’s pip pin was properly installed, which resulted in separation of the pip pin during takeoff. Contributing to the accident was…
- [NTSB GAA21WA217](https://openairdocs.org/ntsb/GAA21WA217.md): Eurocopter BO105 · Archerfield, Australia · Accident · No injuries · Class 5 · Foreign · Aug 19, 2021 · VH-NVH
- [NTSB WPR21LA323](https://openairdocs.org/ntsb/WPR21LA323.md): Cessna 177RG · Albuquerque, NM · Accident · No injuries · Class 3 · Limited · Final report · Aug 15, 2021 · N8029G · Substantial damage
  > The failure of the nose gear hydraulic flex line, which resulted in a loss of hydraulic fluid which prevented the main landing gear from fully extending and locking into place during landing.
- [NTSB ERA21LA367](https://openairdocs.org/ntsb/ERA21LA367.md): Collins Robert S Just Acft Highlander · Brasstown, NC · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 12, 2021 · N409JD · Substantial damage
  > Failure of the left main landing gear wheel lock nuts, which resulted in a wheel separation and nose over during landing.
- [NTSB CEN21LA363](https://openairdocs.org/ntsb/CEN21LA363.md): Rotary RAF2000 · Anahuac, TX · Accident · No injuries · Class 3 · Limited · Final report · Aug 7, 2021 · UNREG · Substantial damage
  > The pilot’s incorrect trim system installation, which resulted in a loss of gyroplane control and impact with terrain.
- [NTSB DCA21WA214](https://openairdocs.org/ntsb/DCA21WA214.md): Airbus A319 · Edinburgh, United Kingdom · Incident · Class 5 · Foreign · Aug 6, 2021 · G-DBCF · No damage
- [NTSB CEN21LA352](https://openairdocs.org/ntsb/CEN21LA352.md): North American AT-6F · Adrian, MI · Accident · No injuries · Class 4 · Limited · Final report · Jul 28, 2021 · N6601C · Substantial damage
  > The loss of control during landing due to the out of rig condition of the tailwheel which resulted in a ground loop and impact with the runway.
- [NTSB GAA21WA238](https://openairdocs.org/ntsb/GAA21WA238.md): Piper PA31 · Doncaster, United Kingdom · Incident · No injuries · Class 5 · Foreign · Jul 23, 2021 · G-UKCS · Minor damage
- [NTSB CEN21LA326](https://openairdocs.org/ntsb/CEN21LA326.md): Gary James Lail Zenith CH 750 Cruzer · Blossom, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 17, 2021 · N9667Z · Substantial damage
  > The improper swaging of the rudder control cable, which disconnected during flight and resulted in the loss of control.
- [NTSB CEN21LA323](https://openairdocs.org/ntsb/CEN21LA323.md): Cessna P210N · Refugio, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 16, 2021 · N174R · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll with a tailwind.
- [NTSB ERA21LA289](https://openairdocs.org/ntsb/ERA21LA289.md): Piper PA-23 · Easton, MD · Accident · No injuries · Class 3 · Limited · Final report · Jul 15, 2021 · N776MC · Substantial damage
  > A total loss of left engine power and uncommanded feathering of the left propeller for reasons that could not be determined.
- [NTSB CEN21LA319](https://openairdocs.org/ntsb/CEN21LA319.md): Air Tractor AT-401 · Carroll, IA · Accident · No injuries · Class 3 · Limited · Final report · Jul 13, 2021 · N7315P · Substantial damage
  > The wear-related failure of the airframe fuel boost pump, which resulted in fuel starvation and a loss of engine power.
- [NTSB CEN21LA276](https://openairdocs.org/ntsb/CEN21LA276.md): Autogyro Cavalon · Collinsville, TX · Accident · No injuries · Class 3 · Limited · Final report · Jun 16, 2021 · N46JS · Substantial damage
  > The total loss of engine power due to the failure of both fuel pumps, which resulted in fuel starvation. The reason for the failure of both fuel pumps could not be determined based on available evidence.
- [NTSB CEN21LA267](https://openairdocs.org/ntsb/CEN21LA267.md): Great Lakes 2T-1A-1 · Roanoke, TX · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 14, 2021 · N503GL · Substantial damage
  > Inadequate maintenance of the brake system which resulted in the caliper binding closed and the subsequent loss of directional control during the landing roll.
- [NTSB DCA21WA154](https://openairdocs.org/ntsb/DCA21WA154.md): Boeing 777 · London, United Kingdom · Incident · Class 5 · Foreign · Jun 11, 2021 · G-YMMR · No damage
- [NTSB GAA21WA131](https://openairdocs.org/ntsb/GAA21WA131.md): Cessna 340 · Essex, United Kingdom · Accident · No injuries · Class 5 · Foreign · May 28, 2021 · N63EN · Substantial damage
- [NTSB ERA21FA233](https://openairdocs.org/ntsb/ERA21FA233.md): Bhi H60 Helicopters UH-60A · Leesburg, FL · Accident · 4 fatal · Class 3 · Field · Final report · May 25, 2021 · N9FH · Destroyed
  > The failure of the water tank snorkel support structure, which allowed the snorkel to contact the main rotor blades. Contributing to the accident was insufficient Federal Aviation Administration oversight of the supplemental type certificate process for the…
- [NTSB WPR21FA203](https://openairdocs.org/ntsb/WPR21FA203.md): Dassault Mirage F-1 · Las Vegas, NV · Accident · 1 fatal · Class 3 · Field · Final report · May 24, 2021 · N567EM · Destroyed
  > The pilot’s exceedance of the airplane’s critical angle of attack on approach and failure to fly a traffic pattern track consistent with a no-flap configuration. Contributing to the accident was the failure of the airplane’s flaps to extend while in the…
- [NTSB CEN21LA244](https://openairdocs.org/ntsb/CEN21LA244.md): Dehavilland DHC-2 MK.I · Oak Island, MN · Accident · Serious injuries · Class 3 · Limited · Final report · May 22, 2021 · N218RD · Minor damage
  > The failure of an O-ring in the landing gear system, which resulted in the inadvertent extension of the main wheel in the amphibious float. Contributing to the accident was the pilot’s decision to depart with a known hydraulic leak in the landing gear system.
- [NTSB ERA21FA224](https://openairdocs.org/ntsb/ERA21FA224.md): Piper PA-31P · Myrtle Beach, SC · Accident · 1 fatal · Class 3 · Field · Final report · May 21, 2021 · N575BC · Destroyed
  > The mechanic’s inadvertent installation of the elevator trim tabs in reverse, which resulted in the pitch trim system operating opposite of the pilot’s input and the pilot’s subsequent loss of control.
- [NTSB CEN21LA218](https://openairdocs.org/ntsb/CEN21LA218.md): Cessna R182 · Tulsa, OK · Accident · No injuries · Class 4 · Limited · Final report · May 13, 2021 · N8051B · Substantial damage
  > The pilot’s inability to extend the main landing gear due to incomplete maintenance, which resulted in a partial wheels-up landing and the mechanic’s failure to follow proper maintenance procedures that led to the loss of main landing gear system hydraulic…
- [NTSB ERA21LA208](https://openairdocs.org/ntsb/ERA21LA208.md): Israel Aerospace Industries Gulfstream G150 · Ridgeland, SC · Accident · No injuries · Class 3 · Limited · Final report · May 5, 2021 · N22ST · Substantial damage
  > The flight crew’s continuation of an unstable approach and the failure of the ground air brakes to deploy upon touchdown, both of which resulted in the runway overrun. Contributing was the crew’s motivation and response to external pressures to complete the…
- [NTSB ENG21WA030](https://openairdocs.org/ntsb/ENG21WA030.md): De Havilland DHC6 · Wallis & Futuna, Wallis & Futuna · Incident · Class 5 · Foreign · May 3, 2021 · F-OCQZ · No damage
- [NTSB ERA21LA198](https://openairdocs.org/ntsb/ERA21LA198.md): Cessna 172M · Fredericksburg, VA · Accident · No injuries · Class 4 · Limited · Final report · Apr 24, 2021 · N80874 · Substantial damage
  > The student pilot reported that, during the landing roll, he applied brakes and the airplane veered right. He was unable to correct back to the centerline or brake effectively; the airplane exited the runway and struck an embankment before coming to rest. The…
- [NTSB ERA21LA183](https://openairdocs.org/ntsb/ERA21LA183.md): Piper PA-28-140 · Weyers Cave, VA · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 12, 2021 · N7242F · Substantial damage
  > Maintenance personnel’s inadequate inspection of the rudder control system, which resulted in failure of the rudder control assembly and the pilot’s loss of control during a go-around.
- [NTSB ERA21LA177](https://openairdocs.org/ntsb/ERA21LA177.md): Forisch Edward Bushby Mustang M II · Worcester, MA · Accident · No injuries · Class 3 · Limited · Final report · Apr 6, 2021 · N61EF · Substantial damage
  > Binding of the left aileron bellcrank push/pull rod, which resulted in an uncommanded right turn.
- [NTSB WPR21LA362](https://openairdocs.org/ntsb/WPR21LA362.md): Maule MX-7-235 · Ontario, OR · Accident · No injuries · Class 3 · Limited · Final report · Mar 28, 2021 · N235X · Substantial damage
  > A loss of hydraulic fluid and failure of the right brake for reasons that could not be determined due to a lack of available evidence.
- [NTSB DCA21WA107](https://openairdocs.org/ntsb/DCA21WA107.md): Boeing 757-24APF · San Salvador, El Salvador · Incident · Class 5 · Foreign · Mar 24, 2021 · N464UP · No damage
- [NTSB CEN21LA164](https://openairdocs.org/ntsb/CEN21LA164.md): Cameron Balloons Z-90 · Celina, TX · Accident · No injuries · Class 4 · Limited · Final report · Mar 20, 2021 · N4505B · Substantial damage
  > The malfunction of the balloon’s envelope venting system during landing in high wind, which resulted in the balloon being dragged along the ground, substantially damaging the envelope.
- [NTSB ANC21LA022](https://openairdocs.org/ntsb/ANC21LA022.md): Cessna A185F · Skwentna, AK · Accident · No injuries · Class 3 · Limited · Final report · Mar 5, 2021 · N1848R · Substantial damage
  > Installation of improper hardware on the ski check cable. Contributing to the accident was the inadequate inspection of the ski yokes, which resulted in the subsequent failure of the right main landing gear ski yoke and collapse of the right main landing gear…

Next page: https://openairdocs.org/ntsb-events/330/sequence.md?year=2021&page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE year(c."eventDate") = 2021
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '330' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/330/sequence?year=2021

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